This is an extremely useful design. I never thought I'd get excited about something like this but I recently moved to an old house with chimney flues running through every room, resulting in shallow alcoves that are of differing sizes.
A fitted wardrobe would be pricey (~$4000), barely fit depthwise and half of the space would just be covering the flue if we wanted it wall to wall.
On the other hand I can just buy 3/4 of these for each wall and still come out ahead. The grooves in the rods are well thought out and mean that I can saw them to size myself, as can anyone.
The only drawback I can think of is having clothes up directly against a wall. This could obstruct airflow and be an incentive for mould to grow.
Might be time for my first ever pledge.